SIOP_SCRATCHC
bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHC, 0);
SIOP_SCRATCHC);
sc->sc_c.sc_rh, SIOP_SCRATCHC);
sc->sc_c.sc_rh, SIOP_SCRATCHC,